Book excerpt: Pianists all know the benefits of playing the "Two-Part Inventions" of J. S. Bach. Now, world-respected jazz pianist and composer Bill Cunliffe has written his own "inventions" that will benefit every player's understanding and performance of jazz. These great-sounding etudes explore the specific harmonic, melodic, and technical challenges faced by jazz keyboardists, including the ii-V and ii-V-I progressions, outlining changes, chord-tone ornamentation, playing in octaves, tonic patterns, block chords, polytonality, stride piano, and left-hand walking bass. Pieces feature chord symbols, explanatory notes, and preparatory exercises, and each invention is performed on the CD by Bill Cunliffe. 123 pages. " . . . perfect for daily warm-up, explores the harmonic and melodic intricacies of jazz, each etude targets a specific technical skill and includes performance notes, inventions gradually become more challenging and the harmonic progressions are varied and very musical . . . a musical feast." -International Association for Jazz Education (IAJE)